/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --secondary-color: #06b6d4;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* 导航栏 */
.navbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 16px;
  text-decoration: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-weight: 500;
}

.nav-link:hover {
  color: var(--primary-color);
  background: rgba(79, 70, 229, 0.05);
}

.nav-link.active {
  color: var(--primary-color);
  background: rgba(79, 70, 229, 0.1);
}

/* 下载下拉菜单 */
.download-dropdown {
  position: relative;
}

.download-dropdown .nav-link {
  cursor: pointer;
  user-select: none;
  display: inline-block;
  font-size: 14px;
}

.download-dropdown.open .nav-link {
  color: var(--primary-color);
  background: rgba(79, 70, 229, 0.1);
}

.download-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  background: var(--card-bg);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--border-color);
  min-width: 340px;
  z-index: 1000;
  overflow: hidden;
  animation: dropdownFadeIn 0.2s ease;
}

@keyframes dropdownFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.download-dropdown.open .download-dropdown-menu {
  display: block;
}

.download-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-color);
}

.download-dropdown-menu a:last-child {
  border-bottom: none;
}

.download-dropdown-menu a:hover {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.06), rgba(6, 182, 212, 0.06));
  color: var(--primary-color);
  padding-left: 24px;
}

.download-dropdown-menu a strong {
  color: var(--primary-color);
}

/* 主内容区 */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* 页面头部 */
.page-header {
  text-align: center;
  margin-bottom: 48px;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* 搜索框 */
.search-box {
  max-width: 600px;
  margin: 0 auto 24px;
  display: flex;
  gap: 12px;
}

.search-input {
  flex: 1;
  padding: 14px 20px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--card-bg);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.search-btn {
  padding: 14px 24px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.search-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

/* 分类区域 */
.category-section {
  margin-bottom: 32px;
  padding: 0 20px;
}

.category-container {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  justify-content: flex-start;
  overflow-x: auto;
  padding: 8px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.category-container::-webkit-scrollbar {
  display: none;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  min-width: auto;
  white-space: nowrap;
  flex-shrink: 0;
}

.category-card:hover {
  background: rgba(79, 70, 229, 0.05);
}

.category-card.active {
  background: rgba(79, 70, 229, 0.1);
}

.category-card.active .category-name {
  color: var(--primary-color);
  font-weight: 600;
}

.category-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.category-name {
  font-weight: 500;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.category-count {
  font-size: 0.6875rem;
  color: var(--text-secondary);
  background: var(--border-color);
  padding: 1px 6px;
  border-radius: 10px;
  margin-top: 2px;
}

/* 提示词区域 */
.prompts-section {
  min-height: 400px;
}

.prompts-container {
  position: relative;
}

.prompts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

/* 提示词卡片 */
.prompt-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.prompt-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.prompt-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.prompt-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  flex: 1;
}

.prompt-category {
  font-size: 0.75rem;
  padding: 4px 12px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary-color);
  border-radius: 20px;
  font-weight: 500;
  white-space: nowrap;
}

.prompt-content {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.prompt-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.prompt-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--bg-color);
  color: var(--text-secondary);
  border-radius: 6px;
}

.prompt-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.prompt-stats {
  display: flex;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.prompt-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.copy-btn:hover {
  background: var(--primary-hover);
}

.copy-btn.copied {
  background: #10b981;
}

/* 加载状态 */
.loading-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  display: block;
}

.empty-state h3 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

/* Toast 提示 */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #1e293b;
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* 页脚 */
.footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
  margin-top: 80px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-color);
}

/* 弹框样式 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 700px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  flex: 1;
}

.modal-close {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.125rem;
  color: var(--text-secondary);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-category {
  display: inline-block;
  font-size: 0.8125rem;
  padding: 4px 12px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary-color);
  border-radius: 20px;
  font-weight: 500;
  margin-bottom: 12px;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.modal-tag {
  font-size: 0.8125rem;
  padding: 4px 10px;
  background: var(--bg-color);
  color: var(--text-secondary);
  border-radius: 6px;
}

.modal-content {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px 24px;
  border-top: 1px solid var(--border-color);
  gap: 16px;
}

.modal-stats {
  display: flex;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.modal-copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.modal-copy-btn:hover {
  background: var(--primary-hover);
}

.modal-copy-btn.copied {
  background: #10b981;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-container {
    padding: 0 16px;
  }

  .nav-links {
    display: none;
  }

  .main-content {
    padding: 24px 16px;
  }

  .page-title {
    font-size: 1.875rem;
  }

  .search-box {
    flex-direction: column;
  }

  .category-section {
    padding: 0 16px;
    margin-bottom: 24px;
  }

  .category-container {
    gap: 4px;
    padding: 4px 0;
  }

  .category-card {
    padding: 6px 12px;
  }

  .category-icon {
    font-size: 1.25rem;
  }

  .category-name {
    font-size: 0.75rem;
  }

  .category-count {
    font-size: 0.625rem;
    padding: 1px 4px;
  }

  .prompts-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  /* 弹框响应式 */
  .modal-overlay {
    padding: 16px;
  }

  .modal-container {
    max-height: 90vh;
  }

  .modal-header {
    padding: 16px 16px 12px;
  }

  .modal-title {
    font-size: 1.125rem;
  }

  .modal-close {
    width: 32px;
    height: 32px;
  }

  .modal-body {
    padding: 16px;
  }

  .modal-content {
    font-size: 0.875rem;
  }

  .modal-footer {
    flex-direction: column;
    padding: 12px 16px 16px;
    gap: 12px;
  }

  .modal-stats {
    font-size: 0.8125rem;
  }

  .modal-copy-btn {
    width: 100%;
    justify-content: center;
  }
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* 选中文字样式 */
::selection {
  background: rgba(79, 70, 229, 0.2);
  color: var(--primary-color);
}